Medicus curat Natura Sanat
Doctor treats, nature heals
Our mission is to support patients with neoplastic & other chronic illnesses on their healing journey with the best of our heart, knowledge and decades of experience. Our innovative, unique and individualized therapy concept is based on immunotherapy combined with hyperthermia treatments in an integrated therapy approach.
Dr. Ralf Kleef
A leading expert in immunotherapy with experience spanning decades.
Contact us for consultation
Request an initial Skype consultation with Dr. Kleef. Give us your phone number or Skype name if you would like us to speak to you live first before scheduling a consultation. Otherwise, we will contact you by email.
Please note that we can call you during our office hours: M to F: 9 am – 5 pm (GMT+2).
Meet the doctor and founder
Dr. Ralf Kleef is a well-known and acclaimed medical and naturopathic doctor specialized in Immunotherapy & Hyperthermia for patients with neoplastic & other chronic illnesses. With his training in immunology in Germany and at Memorial Sloan Kettering Cancer Centre in NYC and later at the NIH, Office of Alternative Medicine (OAM), in 1996 he found his passion: treating cancer through immunotherapy in the footsteps of the father of cancer immunotherapy, William B. Coley.
He founded his Insitute for Hyperthermia and Immunotherapy 1998 in Vienna and treated more than 20,000 patients over the last three decades. His journey goes on with expanding his center to Budapest, Hungary.
Our unique therapy concept
Immunotherapy treatment combined with Hyperthermia.
Dr. Kleef invented a unique cancer treatment concept: immunotherapy combined with hyperthermia and complementary medicine in an integrative approach which is personalized for each and every patient to support the patient´s immune system to fight the illness.
We believe that this is a safe protocol, which is easily tolerable for patients. In our treatments, the side effects of immunotherapy (immune-related adverse effects) occur in much lesser degrees of intensity. Perfecting his approach over the last years, he was able to improve the effectiveness of treatment to a considerable extent.
Discover our combined individualized diagnosis and therapy concept
Dr. Kleef creates individualized therapy plans, specific for every patient’s needs using the following methods:
Chemotherapy
High-dose Vitamin C
Our 30 years of experience
Dr. Ralf Kleef MD, ND, the founder and Chief Medical Director navigates the Clinic since 1998 in research, development and application of innovative cancer therapies.
Outstanding expertise
Outstanding expertise
Qualified team
Qualified Team
Therapeutic results
Top quality devices
Top quality devices
Numerous scientific publications
Numerous scientific publications
Worldwide network
Worldwide network
Patient testimonials
We feel blessed to present you our exceptional patients who believed in themselves, focused on healing and entrusted our care to support them on their healing journey.
The process we follow
Throughout the whole process, from your initial contact, through treatment and after you leave our clinic, our patient coordinators will guide you through the steps and support you with all their expertise, attention and kindness.
We will help with your questions!
- +43 1 585 7311
- info@dr-kleef.at
- Steingasse 33/19, 1030 Wien, Austria
- Monday - Friday: 9:00 a.m. - 5:00 p.m.
